public void TestChange()
{
var value = new int?[] { 0 };
var empty = Array.Empty <int?>();
var set = new HashSet <int?>(new int?[] { 1, 2 });
var enumerable = new AggregateEnumerable <int?>(value, empty, set);
using var enumerator = enumerable.GetEnumerator();
value[0] = 3;
set.Clear();
set.Add(4);
set.Add(5);
set.Add(6);
Assert.AreEqual(4, enumerable.Count());
Assert.AreEqual(null, enumerator.Current);
Assert.AreEqual(true, enumerator.MoveNext());
Assert.AreEqual(3, enumerator.Current);
Assert.AreEqual(true, enumerator.MoveNext());
Assert.AreEqual(4, enumerator.Current);
Assert.AreEqual(true, enumerator.MoveNext());
Assert.AreEqual(5, enumerator.Current);
Assert.AreEqual(true, enumerator.MoveNext());
Assert.AreEqual(6, enumerator.Current);
Assert.AreEqual(false, enumerator.MoveNext());
}
public void TestSingle()
{
var value = new[] { 0 };
var enumerable = new AggregateEnumerable <int>(value);
Assert.AreEqual(1, enumerable.Count());
Assert.AreEqual(0, enumerable.ToArray()[0]);
}
public void TestMultiple()
{
var value = new[] { 0 };
var empty = Array.Empty <int>();
var set = new HashSet <int>(new [] { 1, 2 });
var enumerable = new AggregateEnumerable <int>(value, empty, set);
Assert.AreEqual(3, enumerable.Count());
var values = enumerable.ToArray();
Assert.AreEqual(0, values[0]);
Assert.AreEqual(1, values[1]);
Assert.AreEqual(2, values[2]);
}
public void TestEmpty()
{
var enumerable = new AggregateEnumerable <int>();
Assert.AreEqual(0, enumerable.Count());
}